Pipe-gr



JQB. JENKINS. Pipe Grapple for Oil and Other Wells. No.23o,

Patented Aug. 3, 1880.

ATTORNEYS.

l I L WIT MPETERS, PHOTO-LITMOGRAPHER. WASHINGTON, D c.

UNITED STATES PATENT Orrice.

JAMES B. JENKINS, OF WVARREN, ILLINOIS.

PlPE-GRAPPLE FOR OIL AND OTHER WELLS.

SPECIFICATION forming part of Letters Patent No. 230,783, dated August3, 1880.

Application filed December 1, 1879.

To all whom it may concern:

Be it known that I, JAMES BYRON JENKINS, of WVarren, in the county of JoDaviess and State of Illinois, have invented anew and ImprovedPipe-Grapple, of which the following is a specification.

Figure 1 is a side elevation of my improvement shown as applied to apipe. Fig. 2 is a plan view of the same. Fig. 3 is a sectional elevationof the same, taken through the line -00, Fig. 2.

Similar letters of reference indicate corresponding parts.

The object of the invention is to make a grapple for lowering pipes intowells that may he detached from the pipe automatically by sliding itdown on the pipe until it comes in contact with a coupling.

The invention consists in a grapple formed of two curved plates providedwith interlocking arms so constructed that the plates may be applied toth opposite sides of the pipe, and made to clasp the pipe by lifting oneof the plates, as will be hereinafter fully described.

A represents a section of pipe having a coupling, B, attached to itslower end for connectingit with an adjacent section. The grapple is madein two parts or pieces, B O.

The part B consists of a curved plate, 1), having curved arms E formedupon its upper corners, which arms E have hooks upon their ends.

The part 0 consists of a curved plate, Gr, having curved arms H formedupon its lower corners, the said arms H having hooks upon their ends.The curvature of the plates and arms is such that the hooks of the armsE H will interlock upon the opposite sides of the pipe A. The upper edgeof the plate Gris beveled upon its outer side, as shown in Figs. 1 and3, so that it may take hold of the pipe A.

To the middle part of the upper edge of the plate I) is attached an eye,I, to which is attached the end of a short chain, J. The other end ofthe chain J is attached to an eye, K, attached to the middle part of thelower edge of the plate Gr.

To the eye K is also attached the end of a Windlass or derrick chain, L.

In using the grapple the two parts B (J are. interlocked around a pipe,A, and when power is applied to the chain L the upper edge of the plateG will be drawn against the pipe A, and the part 0 of the grapple willact as a lever to draw the part B against the pipe A, claspin g the saidpipe firmly. By slacking the chain L the grapple will be allowed toslide down the pipe A to any desired point.

When the grapple is to be detached it is allowed to slide down the pipeto a coupling, against which the lower edge of the plate D strikes. Thisstops the part B and causes the arms E H to unlock, so that the grapplecan be withdrawn.

This construction makes the grapple very convenient for lowering pipesinto and raising them from wells, and its compactness allows it to beused with facility in bored wells.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

A grapple for lowering pipes into wells, that consists of a curvedplate, D, having curved hook-arms E upon its upper corners, and a curvedplate, H, having curved hook-arms upon its lower corners, said plateshaving, respectively, the eyes I K, connected by a chain, J, as shownand described.

JAMES BYRON JENKINS.

\Vitnesses CHARLES LIBBY GILEs, MARY ABBOTT GILEs.

